Lightning-arrester.



w. 0. SHINN.

LIGHTNING ARRESTER.

APPLICATION FILED DBO. 28. 1908.

Patented Jan. 4, 1910.

[fie 62302 .UNITED T OFFICE.

WILLIAM C. SHINN, OF LINCOLN, NEBRASKA.

LIGHTNING-ARRESTER.

T 0' all whom it may concern:

Be it known that I. lViLnian C. Suixx, citizen of the United States, residing at Lincoln, in the county of Lancaster. and State of Nebraska, haveinvented a certain new and useful Improvement in Lightning- Arresters, of which the following is a full, clear, concise, and exact description.

My invention relates to a lightning arrester, and more particularly an arrester adapted to connect the line wires of a telephone system with a cable of a lightning Jrod system.

The object of my invention is to provide a device of simple construction which is readily secured in place, and which will serve to ground through a lightning rod system any static electric discharges resulting from the telephone wires being struck by lightning.

My arrester thus provides suitable means for protecting the telephone and the user thereof as, well as the house in which the telephone is located from the injury due to the wires being struck by lightning.

My invention consists of a lightning arrester equipped with means for readily connecting the same between the line wires of a telephone system and a cable of a lightning rod system, where a building is equipped with both of said systems. 1

The several features of my invention may be more readily understood by-reference to. the accompanyingdrawings, in which,

like parts throughout the several views.

.. The ease of the arrester is made of any the plate 5 and clamped thereto by said Specification of Letters Patent.

Application filed December 28, 1908. Serial No. 469.608.

Patented Jan. 4. 1910.

wings 7, 7 is one end of a short section of lightning rod cable Said section of cable extends through an opening provided in the side of the case. Permanently securml upon the outer end of the section 8 is a coupling 9, preferably a T-coupling. The head of the T-coupling can readily be connected to a lightning rod 10 as shown in Fig. ,1, thus grounding the plate 3 through a lightning rod system.

Mounted upon the base 1, upon opposite sides of the central plate 5 are metallic mental plates'11, 11 which are separated from the central arrester plate by air spaces. Said plates 11, 11 are provided with the usual serrations or teeth 12, which are opposed to the teeth 6 of the plate 5.

Upon diametrically opposite sides of the base 1 and projecting up through the bottom thereof are threaded posts 13, 13. Said posts extend up through the cover 2, and

passing through the plates 11 serve as screws for securing said plates to the base 1. Nuts 14 upon the end of the osts 13 serve to se;

cure the cover 2 in position. Thumb-nuts 15 upon the'outer ends of the posts 13 provide means for clamping the ends of wires 16, 16 to the posts 13. The wires 16 lead to the telephone line wires which it is desired to protect from lightning discharge. It is thus apparent that with the protector installed in place, the telephone line wires are connected through the leads 16, 1.6 and posts 13, 13 to the arrester plates 11, and that the arrester plate 5 is electrically connected through the cable section 8 with a lightning rod 10. The air spaces between the plate 5 and the plates 11 prevent any leakage of telephonic currents. However, as is well known,- static electric dischar es resulting from a stroke of lightning wi l find a path across said air spaces between the arrester plates rather than through the telephone, and the lightning rod will furnish a perfect ground for such discharges.

My invention therefore provides a safe and reliable means for protecting telephone or similar apparatus from disastrous effects which might otherwise result from lightning striking the line wires.

I claim:

1. A lightning arrester adapted to connect telephone line wires to a lightning red I having opposed upturned Wings, a section of tallic plates mounted within said *ase and separated from said other plate by air spaces and binding post in electrical connection with'each of said additional plates respectlvcly said binding post PLOYlLllHg means a y it scaring as in for connecting said telephone line wires to i said lightning arrester. 2. In a lightning arrester, a case of insulating material comprising a base plate havmg upstanding peripheral flanges and a cover therefor fitting said flanges, a central plate secured to said base, said plate having a pair of opposed upturned wings at each end, a section of lightning rod cable overlying said plate and clamped thereto by said wings, said cable extending through the side of said case. two side plates mounted on said base upon the opposite sides of said central plate and separated tlwrcl'ron't by air spaces, two thriaded posts extending through said base and projecting above said cover upon :itpposite :sn, s thereof each of said post's extending t mu h one of t id side plates and ning nieans tor soct'tring said plat-es to said base, nuts upon the upper ends of said posts to secure said cmer in position, and thumb-nut above said other nuts to provideincans for connecting electrical leads to said posts. 

